Study
Control Systems
A device, or set of devices, that manages, commands, directs or regulates the behavior of other
devices or systems
Example of a Control System
Thermostats
What are the 4 main ICS process Models
Discrete
Batch
Continuous
Hybrid
What are Discrete Processes
Processes where a specified qty of material moves as a unit between workstations, and each unit
maintains its unique ID
Discrete Process Example
Robotic Assembly in automotive Production
What are Batch Processes?
Some applications require specific quantities of raw materials be combined in specific ways for
particular durations to produce an intermediate or end result
Batch Process Example
Production of glues that require mixing of raw materials in a heated vessel for a period of time to
form a quantity of end product
What are Continuous Processes
Often represented through variables that are smooth and uninterrupted in time, such as constant
cooling of water temp in a heating jacket.
What are Hybrid Processes
Combo of ICS Process Models
What is the Purdue Enterprise Reference Architecture (PERA)?
One of the first reference architectures for industrial control networks
What are the 5 levels of the PERA?
4: Business Network
3: Plant-wide control
2: Individual process/cell/line Supervisory
, 1: Individual process/cell/line controllers
0: Individual process/cell/line sensors and actuators
Process Engineer
Designs & Optimizes
Field Tech
Maintains & Repairs
Programmer
Writes control logic
Operator
Manages & Controls process
ICS Owner/Operators
Purchase & Use the system
Bear primary responsibility for safe operation & meet regulations
Vendors
Manufacture HW/SW
EX: ABB/GE/SEL
Integrators
Design, Configure, test, train and refresh
Government
Implement guidance & regulation
Who bears the burden of making sure security is built into the systems?
Owner/Operators
What are 4 industries that rely on ICS?
Factory Automation (Automotive)
Process Industry (Cement & Glass)
Energy Sector (Oil, Gas, Electricity)
Service Industry (Retail)
What is Critical Infrastructure?
Key elements include:
Physical and Electronic assets of Infrastructure